Engineering Contracts And Specifications

SPECIFICATIONS FOR ENGINE HOUSE.
40. Copper drip strips, i^ inches wide, i Dri*>-inch to project into the mortar joint, and ^ inch to
be exposed and bent to an angle of 30°, as shown on detail sheet No. 12, shall be furnished the bricklayers on the scaffold.
TIN.
41. The roof .shall be covered with roofing plates, standing seam, with joints well tacked, anchored and soldered, using rosin as a flux, and 8-pound soldering coppers, and tin well and closely cleated to roof.
42. The roofing plate used shall be Scott's IX Tin Plat®. extra coated American roofing tin plate, and must
bear a coating of not less than 36 pounds to the box, and must be fully guaranteed, with the maker's name stamped in each sheet, and each sheet must be coated in perfect uniformity and free from u wasters."
43. The gutters shall be lined with Scott's IX Gutters and roofing tin, flat seam, and shall conform to the *u»hlni-gutter plan as shown on slfeet No. 8, and shall be carefully flashed against the brick lire-walls, and be
firmly nailed to the wood flashing strips, after which all of this gutter flashing must be well and carefully counterflashed.
44. The wood flashing strips shall be built into the brick fire-walls 8 inches above the wall edge of gutter at center of roof and 24 inches above at each of the four corners.
4q. The Mashing around the skylights shall «Mf>rht
r • ' i « • i i 7 » ». » M»i*hing.
extend against and o inches up the wood skylight frame, and shall be finished before the carpenter lays the base.
46. Tin shall be painted, before being In id, ^"'iTlcr*"1 with two coats of the best quality of iron oxide, Ai'€r> ground in pure linseed oil, on the under side, and
must be perfectly dry before laying; and that part of the roof covered with tin shall have two layers of heavy straw building paper laid over sheathing boards before putting down the said tin. Kach layer of paper to overlap and be fastened down smooth and Hat, and to be kept free from moisture. (See clause No. 51.)
LUMBER.
47. All the lumber used in the construction of the building shall be graded as follows: